Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"Joining Technology"”.
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Durable Sandwich Structure Joining Technology for NASA's Ares V Launch Vehicle
Joining of uniformly-curved composite sandwich panel segments, typical in state of the art aerospace launch vehicles, should be mass-efficient. Adhesively bonded joints can provide increased mass-efficiency over mechanically-fastened joints. But, due to manufacturing sensitivities and certification …
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Development and Characterization of Friction Bit Joining: A New Solid State Spot Joining Technology Applied to Dissimilar Al/Steel Joints
<p>Friction bit joining (FBJ) is a new solid-state spot joining technology developed in cooperation between Brigham Young University of Provo Utah, and MegaStir Technologies of West Bountiful Utah. Although capable of joining several different material combinations, this research focuses on the …
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An end-to-end online quality prediction system for ultrasonic metal welding based on deep learning
Ultrasonic metal welding (UMW) is an important joining technology that is widely used in industry. In many UMW applications, there is a strong need for predicting joint quality quickly, reliably, and non-destructively. State-of-the-art quality assessment methods such as destructive tensile testing …
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Statistical Investigation of Friction Stir Processing Parameter Relationships
Friction Stir Welding (FSW) is an emerging joining technology in which basic process understanding is still inadequate. Knowledge of FSW parameter relationships is needed to better understand the process and implement proper machine control. This study utilized a 3-factor, 3-level factorial design …
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Entwicklung einer mechanischen Verbindungstechnik für Sandwichwerkstoffe
… for this is the lack of a generally applicable joining technology for such elements. The first part of this thesis discusses the systematic development of all principle solutions for a mechanical joining of two sandwich elements according to systematic engineering design theory as well as their …
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Abnormal Grain Growth of AA2195 Friction Stir Weld Nugget during Solution Heat Treatment
<p>Friction Stir Welding is a solid-state joining technology increasingly being applied to aluminum and other alloys in the automotive and aerospace industry due to its advantages in microstructure and mechanical properties over conventional welding techniques. To further enhance the mechanical …
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Experimental and Numerical Study on Bolted/Bonded Composite Joints for Aircraft
Bolted and bonded joining technologies in composite structures have been widely studied since the 1970s. Although every technology has advantages and disadvantages, bonded joint technology has the potential to reduce the weight and manufacturing cost of advanced aircraft structures. However, bolted …
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THE STRENGTH OF BRAZED SINGLE-LAP JOINTS
Brazing is a critical materials-joining technology because it can join like or dissimilar materials, create high performance joints for use at high operating temperatures, and create thousands of joints simultaneously due to how the liquid brazing filler metal wets the base material and flows. The …
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Urychlení manipulační pevnosti u 2K PUR lepidla
Práce se věnuje urychlení doby k získání manipulační pevnosti u dvoukomponentního polyuretanového adheziva, které bylo nově zakoupeno ve firmě Magna Exteriors Bohemia a bylo potřeba otestovat. K urychlení po rozboru problému byly vybrány metody IR zářiče, teplotní komory, které se porovnávaly s …
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Modellierung und Simulation eines Verbunds von Sandwichplatten zur Entwicklung einer mechanischen Verbindungstechnik
… due to unsolved problems in the connection technology and uncertainties in the mechanics of such structures. Hence, in this filed, there exists a demand for the support of design engineers in designing of sandwich structures. Today, the Finite-element-method (FEM) for the simulation of the …